<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="105px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="80px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="160px">
          <template slot-scope="scope">
              {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
              <el-button type="primary" icon="el-icon-edit" size="mini"  @click="showEditDialog(scope.row.goods_id)"></el-button>
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
          </template>  
        </el-table-column>
      </el-table>
                   <!-- 分页功能 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background>
    </el-pagination>
    
    </el-card>
<!-- 展示编辑信息对话框 -->
    <el-dialog
      title="编辑商品💭"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!-- 内容 -->
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="110px"
      >
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="editForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格(元)" prop="goods_price">
          <el-input v-model="editForm.goods_price" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量(KG)" prop="goods_weight">
          <el-input v-model="editForm.goods_weight" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
          <el-input
            v-model="editForm.goods_number"
            type="number"
            @keyup.enter.native="editGoodsInfo"
          ></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editGoodsInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  created() {
    this.getGoodsList()
  },
  data() {
    return {
      queryInfo:{
        query:'',
        pagenum:1,
        pagesize:10
      },
      // 商品数据列表
      goodslist:[],
      // 商品总条数
      total: 0,
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
      },

    }
  },
  methods: {
   async getGoodsList(){
     const {data: res} = await this.$http.get('goods',
     { params : this.queryInfo})

     this.goodslist = res.data.goods
     this.total = res.data.total
    },
    // 监听pagesize的变化,主要是得到newSize
    handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听pagenum的变化得到newnum
    handleCurrentChange(newPage){
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    async removeById(goods_id){
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if(confirmResult !== 'confirm'){
          return this.$message.info('已经取消删除!')
        }
        const {data: res} = await this.$http.delete(`goods/${goods_id}`)
        this.$message.success('删除商品成功!')
        this.getGoodsList()
    },
    goAddpage(){
      this.$router.push('/goods/add')
    },
    async showEditDialog(id){
      const { data: res } = await this.$http.get("goods/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("查找用户信息失败！❌");
      }

      // 将修改后的用户信息赋值给查找到的用户信息
      this.editForm = res.data;

      this.editDialogVisible = true;
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    editGoodsInfo(){
        this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        // 通过预处理，可以发起修改用户信息的请求
        const { data: res } = await this.$http.put(
          "goods/" + this.editForm.goods_id,
          {
            goods_id: this.editForm.goods_id,
            goods_name: this.editForm.goods_name,
            goods_price: this.editForm.goods_price,
            goods_weight: this.editForm.goods_weight,
            goods_number: this.editForm.goods_number,
            // 设置分类
            goods_cat: this.editForm.goods_cat,
          }
        );

        // 判断是否修改成功
        if (res.meta.status !== 200) {
          console.log(res);
          return this.$message.error("更新用户信息失败！❌");
        }
        // 如果修改成功，关闭对话框并刷新数据，弹出提示成功信息
        this.editDialogVisible = false;
        this.getGoodsList();
        this.$message.success("修改用户信息成功!✔️");
      });
    }
  },
}
</script>

<style lang="less" scoped>

</style>